Sifting-machine.



H. H. BROWN.

SIFTING MACHINE.

'APPLIOATION FILED SEPT. 28, 1912.

Patented Sept. 9, 1913.

2 "Hul 5 .IIIHII" H w m, R H C? U .V

UITED M T OFFI HARVEY H. BROWN, or GRAND RAPIDS, MICHIGAN.

ermine-Machine.

To all whom/2'15 may concern Be it known thatI, HARVEY H. BROWN,

a' citizen of the United States of America, residing at Grand Rapids, inthe county of Kent and State of Michigan, have invented certain new anduseful Improvements in Sifting-Machinesyand I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as Wlll enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to improvements in sifting machines, and moreparticularly to machines for sifting ashes, and its object is to providea device that will retain the dust within the same, and that willeffectually separate the ashes from the cinders and partially burnedfuel, and to provide the device with various new and useful featureshereinafter more fully described and particularly pointed out in theclaims.

My invention consists essentially of a closed case having a hopper abovethe same and provided with a lid to close the same, and a slide tocontrol the flow therefrom into the case; an inclined screen in thecase, means for vibrating the screen, a compartment in the case toreceive the material that does not pass through the screen, and anothercompartment in the case containing a drawer to receive the material thatpasses through the screen, and means for removing the contents of thecase, as will more fully appear by reference to the accompanyingdrawings, in which 0 Figure 1 is a longitudinal vertical sectlon ofadevice embodying my invention; Fig. 2 a transverse section of the sameon the line 22 of Fig. 1; and Fig. 3 is a sectional detail on the line3-3 of Fig. 1.

Like numbers referto like parts in all of the figures.

1 represents a rectangular case of any suitable dimension, preferablysquare in cross section and of greater length than width, 2 is a hoppermounted on the case having an opening at the bottom, and pro' vided witha slide 3 to close said opening more or less to regulate the flow fromthe hopper into the case, or to shut off the flow as occasion mayrequire. The hopper has a cover 2* hinged thereto whereby the same maybe closed to retain the dust or ashes, 4 is an inclined screen in thecase below the hopper and above the drawer 5 removable from the case.This screen at its lower end Specification of ftetters Patent.

PatentedSept.9,1913.

Application file'rl September 28, 1912. 7 Serial No. 722,816.

projects over a partition 6 extending upward from the bottom of the casetonear the screen and spaced apart from the rear end of the case toforma receptacle to receive the cinders and partially burned fuel orother like material too large to pass through the screen.

7 is a slide in the bottom of the case which when drawn out leaves anopening to discharge the contents of said receptacle.

8 represents two crank shafts journaled in the case the crank portionsthereof projecting upward and connected by rods 9. These crank shaftssupport the screen and oscillate in arcs about their axes wherejournaled in the case.

To prevent material from escaping over the upper end of the screen, anangle bar 11 extends transversely across its upper end, and its attachedthereto. To prevent escape of material at the edges of the screen anglebars 12 are fixed on the inside of the case above the screen and projectover the edges of the screen.

To oscillate the screen a rotating crank shaft 10 is j ournaled in thecase and projects outside the same and is provided with a handle formanually rotating said shaft. This shaft is connected by a rigid arm tothe angle bar 11, the screen being flexible in the portion extendingbetween the crank shaft 8 and the bar 11, whereby when, the shaftrotates the flexibility of the screen permits the arm and crank torotate. This movement together with the arcuate movement of theoscillating crank shafts 8 imparts to the'screen a compound longitudinaland vertical movement, whereby the material thereon is quite effectuallyacted upon to sift the same, and also to cause the portion that willnotpass through the screen to traverse the screen and escape from thelower end thereof. 7

What I claim is 1. A sifting machine, comprising a closed case, a hopperabove the case and communicating therewith, a screen in the case belowthe hopper inflexibly supported throughout a portion of its length andflexible at one end, means for movably supporting the screen, a rotatingcrank shaft, and means for directly connecting the flexible end of thescreen and the crank portion of the aforesaid shaft, and means formanually rotating said shaft. 7

2. A sifting machine, comprising a case,

a hopper above the case, a slide to control the flow from the hopper tothe case, an inclined and movably supported screen beneath the hopperhaving a flexible projecting end, oscillating crank shafts supportingthe screen, a manually rotated crank shaft, and an arm rigidlyconnecting the crank portion of the shaft and the flexible end of thescreen. v 8. A slfting machine, comprls ng a closed case, a hopper abovethe case, means for con- 7 trolling the flow from the hopper to thecase, an inclined frame below the hopper, a screen attached to the frameand having a flexible end projecting from one end of the the crank.

shaftnear the angle bar, and means for di-- rectly connecting the saidcrank shaft and the angle bar whereby the angle bar and end of thescreen follow the movement of In testimony whereof I affix my signaturein presence of two Witnesses.

HARVEY H. BROWN.

Witnesses:

PALMER A. JONES, LUTHER V. MOULTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

